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Erosion and Flood Management
John Miller
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Purpose of Erosion/ Sediment Control Codes◦ Promote Safety◦ Preserve Property values◦ Lessen burden on taxpayers for flood control◦ Improve community
Champaign Residential Erosion Planning
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Erosion Prevention Practices
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Sample Erosion Plan
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Sample Erosion Plan
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Sediment Fence Barrier◦ Fence with geotextile fabric to hinder flow of
sediment Grass Buffer Strip
◦ Wide strips of undisturbed vegetation consisting of grass or other resistant plants surrounding disturbed site
Stone Bag Inlet Protection◦ Stone filled woven bags place around drainage
inlets
Residential Erosion Control Tools
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Rock Check Dam◦ Gravel or rock buildup in channels to slow down
flow of runoff Downspout Extender
◦ Piping to move downspout outlet away from erodible soil, yard
Erosion Control Blanket◦ Woven from selected material and tactically
placed to slow water flow
Residential Erosion Control Tools
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Dams Channels Sea Walls Levees Etc.
Large Scale Erosion and Flood Control
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In the Alleghany Highlands of western Virginia
Backs up the Jackson River for 12 miles to create Lake Moomaw
Created by Army Corps of Engineers Part of the Flood Control Act of 1946 Construction lasted from 1974-1979 Reservoir was filled by 1982
Gathright Dam Overview
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Flood protection of industrial, commercial, and residential properties
Saves lives and money for residents and business owners
Project Scope for the Dam
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Bird’s Eye View of Lake Moomaw
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Rock fill embankment
Impervious Earthen Clay core
1,310 ft. Long 257 ft. high 1000 ft. wide at
base
Design
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180 cu. Ft./ sec water flow
Checked regularly by engineers
Outlet Drain